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3 Sheets-Sheet 1. S. T. LOOKWOOD.

MACHINE FOR TURNING BAGS.

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S. T. LOKWOOD.

MACHINE FOR TURNING BAGS.

10.297.141. Patented Apr. 22, 1884.

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S. T. LOOKWOOD.

MACHINE F011 TUNNING BAGS.

No. 297,141. Patented Apr. 22, 1884.

a. m7/ G'/ SAMUEL T. LOCKWOOD,

Barrena Carien.

OF CHICAGO, ILLINOIS, ASSIGNOB TO DAVIS J.

WHITING, OF SAME PLACE.

MACHINE FOR TURNNG BAGS.

SPECIFICATION forming part of Letters Patent No. 297,141, dated April 22, 188%.

Application filed March 8,1883. (No model.)

To @ZZ whom it mag/concern:

Be it known that I, SAMUEL-T. LocKwooD, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Machines for Turning Bags, of which the following, in connection with the accompanying drawings, is a specification.

In the drawings, Figure 1 is a top or plan view of a bag-turning machine embodying my invention, with the top or cover thereof removed. Fig. 2 is a side view of the same. Fig. 3 is a rear view thereof. Fig. 4t is a section in the plane of the line x x of Fig. 2, viewed in the direction indicated by the arrow there shown. Fig. 5 is a detail, the same being a vertical cross-section of the upper por tion of the machine, more fully showing the construction of the sliding carriage and its supports and guides. Fig. 6 is a detail, the same being a plan view of the means employed for permitting the lateral adjustment and expansion of the bag turning or reversing arms. Fig. 7 is a detail, the same being a vertical section showing the means employed for reciprocating the carriage. Fig. 8 is a section in the plane of the line y y of Fig. 7, viewed in the direction indicated by the arrow there shown; and Fig. 9 is a detail, the same being a side View of a part of the reversing-gearing shown in Fig. S, but viewedfrom the opposite side from which the same parts are viewed as shown in Fig. 8.

Like letters of reference indicate like parts.

A represents the stationary part or main frame .of the machine, upon the upper or horizontal bars of which I secure metallic strips or tracks A A as is clearly shown in Fig. 5.

B is'ia traveling or reciprocating frame or carriage resting freely on the strips A A.

A A are blocks or guides secured to the carriage B, and overlapping the outer sides of the strips A A and the main frame, as shown, thus enabling the frame B to be reciprocated on-the way or track formed by the frame A and strips A A without danger of its leaving the said track.

B isa rack rigidly secured to the carriage B.

C C are bag turning or reversing arms, and

h hare shouldered plates mounted freely on a cross rod or bar, h', forming a part of the frame or carriage B, the said rod or bar passing through the shoulders of the said plates. Setscrews t' i pass through the plates It hI and meet the rod or bar L, thereby admitting of the said plates being adjusted laterally on the 5 5 said rod. The plates hh are slotted, as shown at the dotted lines at h h in Fig. 6. rlhe arms C C are pivoted to the plates h h, as shown at a, and jj are pins or studs passing from the said arms into the slots It" IL. Springs 6o a a are attached to the plates hy h, and rest against the arms CC, as shown. These arms C C are eXpansible laterally, their inclined portions a c striking thimbles ct af as the said arms move forward and while they are in the 65 bag, thereby expanding the bag to its full Width as it is presented to the stripping-roll` ers, hereinafter referred to.

D is the bag-holder. This holder consists in part of the horizontal fingers b b and bb. 7o

The fingers b b are attached to a horizontal rod, b, passing through the upper ends of vertically-arranged rods c c, adapted to move vertically in suitable boxes or guides.

d is a cross-bar connecting the lower portions 7 5 of the rods C C, and c c are spiral springs pressing downward on the said bar d. The h'ngers b b are connected to a horizontal rod, b", supported by means of brackets e e', at-

tached to the frame A, as is plainly indicated 8o in Fig. 4.

E is a rocking cam supported by the frame A, and extendingat one end beneath the bar d, which rests thereon.

F is a wheel or roller attached to the car- 8 riage B, and traveling on the cam E as the said carriage is reciprocated.

G isa table or cover arranged over the carriage and carriage-way.

ff are arms or wires secured in the thim- 9o bles ct c, which are mounted on a shaft, f, and said fingers f f extend underneath the forward end of the table G. Y

H H are stripping-rollers, one rolling on the other, the upper one of the said rollers hav- 95 IOC the rollers H H, and I is a fiy-table upon which the bags are deposited by the ily.

J is a buffer on the forward end of the rack B.

J is a stop to aid in stopping and starting the carriage B. The stop J consists of ahorizontal rod supported in suitable bearings attached to the frame A.

J is a spiral spring surrounding the rod J, and resting at one end against the frame A, and at the other against a shoulder, e, on the said rod.

Both ends of the cam or lever E, I make alike, or substantially as shown at g, and I employ arear set of arms C G, in connection with bagholders, strippers, and a fiy similar to those above described, thus making the machine doubleheaded or double-acting; but, as the machine may be single-acting, I have here shown onlyone set of working-parts, the other set, when employed, beinga duplicate thereof.

The operation of this machine is as follows: I lay a number of bags, one upon the other,on the table G, the open ends of the bags being toward the bag-holders b and b. Then the carriage B is at or near the rear end of its track, the roller F holds up the forward end of the lever E, and the bar d, as it rests upon the forward end of the said lever, is thereby held at such a height that the fingers b b are held near enough to the fingers b b to permit a bag to be placed about allof the said fingers with facility. I then place the mouth or open end of the bag about the said fingers. Vhen the carriage moves forward, the forward end of the lever E descends, and the bar d moves down with the descending end of the said lever, owing to the action of the springs e e. The fingers bb then descend as far as the bag will permit, and the mouth of the bag is thus stretched about the bag-holding fingers tightly enough to prevent it from being accidentally removed. By this time the forward ends of the arms C C are in position to strike that part of the bag which is between the upper and lower pairs of fingers, and the continued forward movement of the said arms reverses or turns the bag and presents its bottom to the rollers H H, which strip the bag from the said arms and ngers. The bag then slides down over the fly and is laid upon the fly-table. This operation is repeated as the carriage moves back and fort-h.

Vhile it is not absolutely essential that this machine should in all respects be automatic, Ideem it best to make provision for rendering it as nearly automatic as practicable; and to that end I intend to reciprocate the carriage B, rotate the rollers H H, and operate the fiy I mechanically, and to embody means em ployed for these purposes in the machine. I do not, however, here intend to claim any particular means for reciprocating the carriage B, rotating the rollers H H, and operating the ily, as means adapted to those ends are already well known, and may be applied to the uses referred to in the said machine without material structural alteration; but, having shown means `for rendering the said machine automatie, I may briefly state that the large spur- Wheel K is mounted rigidly on a shaft and engages the rack B', and that a beltwheel, K, is mounted on another shaft and driven by a driving-belt in the usualmanner.

Between the belt-wheel and the wheel K is gearing for reversing the direction of rotation of the wheel K, all of which is more clearly shown in Figs. 7, S, and 9 than elsewhere in the drawings, and in which gures K represents the shaft of the wheel K; K, the shaft of the wheel K; L, a loose belt-wheel on the shaft K, L, a belt-wheel loosely mounted on the shaft I and having on its outer side the spurs or cogs L.

Mis a spur-wheel, rigidly attached to the shaft K and engaging the wheel K.

N is the drive-belt.

O is a sliding shaft or rod, having thereon fingers NN, one passing beyond one edge and the other passing beyond the other edge of the drive-belt.

I? is a bell-crank pivoted to a pin or stud, m, extending from the rod C), the said bellcrank being also pivoted at its angle to the frame A.

Q is a lever pivoted at its lower end to the axle or shaft of the wheel K.

Q is a connecting-rod connecting the lever Q and the bell-crank P.

n is a stud or pin on the outer side of the rack-bar B. these studs; but the machine as represented in Fig. 2 is broken away near one end, and the second stud a does not there appear. It should be located on the bar B, and at such a distance from the stud shown that the two studs operating alternately during the reciprocation of the rack-bar on the lever Q,which projects up between them, will reverse the machine by shifting the position of thatlever sufficiently for that purpose.

R is a shaft, and It and R are spur-wheels thereon. The wheel It engages the eogs L, and the wheel R engages the wheel K.

The driving-belt is driven by means of a pulley, V, on a driving-shaft, V', and is shifted either to the wheel K or to the wheel L', the rod O having a movement sufficient to carry the said belt from one of the said wheels to the other without permitting it to remain on theloose belt-wheel longer than may be necessary to permit the belt to be shifted in the manner described, the said loose belt-wheel being employed only for the purpose of prcventing the belt from being partly on the wheels K' and L at the same time. When the belt is on the wheel K the wheel K will be rotated in one direction by reason of its engagement with the wheel M, which isv on the same shaft with the wheel K, the latter being rigid on its shaft. Vhen the belt is shifted to the wheel L the wheel K will be rotated in the opposite direction by reason of y its engagement with the wheel It, which is in In practice there are two of IOO iro

connection with the wheel L, through the medium of theshaft R, wheel R,'and cogs L", but not in gear with the wheel M, excepting through the medium of' the wheel K. The belt is shifted automatically from one beltwheel to the other, because the wheel K,when rotated, rcciprocates the rack B', thus carrying the studs an against thelever Q and shifting it, and thereby shifting the belt through the medium of the be1lcrank and the sliding rod O. The lower wheel, H, I rotate by means of the drive-chain V,passing over a sprocket, V, on the shaft of the said wheel, and overa sprocket, VW', on the shaft V.

S is a cam rigidly applied to the shaft K", and S is a vibrating lever carrying a roller, S.

T is a cord connecting the upper end of the lever S to an arm, T', on the shaft or arbor of the fly I.

U is a sliding-bar linked at one end to van arm on the shaft or arbor of the fly, and U is a spring exerting itself on the bar U in such a direction as to throw the fly-ngers over toward the table I when the cord T is slack.

The cam S,whieh moves as the wheelK moves,

strikes the roller S', which then rolls outward on the eonvexity of the cam, thereby throwing the lever S back and raising the y through the medium of the cord T. When the cam S and wheel K move in a direction reverse to that referred to, the roller S rolls back or inward on the convexity of the cam,which movement, excepting for the action of the spring U', would permit the cord T to become slack; but the said spring prevents that slack and returns the iiy to the fiy-table.

The fingers b b may descend by gravity.

While I have shown and described herein the combination of an expansible bag-holder adapted to hold open the mouths of the bags, a reciprocating bag-turner, the tilting-lever made cam-shaped near both ends, and the traveling rollers, I do not seek herein to claim the same, since such combination forms the subject of a claim in my application for a patent for improvements in machines for turning bags, filed May 23, 1883, Serial No. 95,917.

Having thus described my invention, what I claim as new, and desire to secure by Letters 'Pa-tent. is-

1. The combination of separable bag-holding fingers, the reciprocating ba-g-turners, and the rotary stripping-rollers, with means for` supporting and operating the said fingers, for reciprocating the bag-turners, and for rotating the said rollers. for the purposes set forth.

2. rIlhe combination of the bagholding iingcrs b b',rneans for supporting the said fingers, the reciprocating bag-turners C C, the tilting cam or lever E,and the traveler F,wit`n means `for operating the said bag-holding fingers b and arranged to hold open the mouth of the bag, supports for said fingers, a bar, and rods connecting the said bar with the supports of fingers b', with a reciprocating bag-turner, a tilting cam or lever for operating the said iingers b', and extending underneath the said bar, a traveler. F, for actuating the said camand a table for supporting the bags, substantially as and for the purposes set forth.

5. The combination of the bag-supporter or table G, with the bag-holding fingers b b and b b, arranged. substantially as shown and described, with relation to the supporter G, the reciprocating pivoted bag-turners C C, located underneath the supporter G, and arranged to pass between the separable fingers b I) and b b', the cam or lever E, means for supporting the said fingers, and operating them from the cam or lever E, and means for operating the said bag-turners and earn, substantially as and for the purposes set forth.

6. The combination of the fixed ngers b b, a support for the said fingers, the fingers b b', the horizontal rod b, the vertically-movable rods c c, the cross-bar d, and a support for rods connected with the fingers b b', with the tilting cam or lever E, extending underneath the cross-bar' d, a reciprocating bag-turner, the traveler I?, and means for reciprocating the said turner and traveler, substantially as and for the purposes set forth;

7. The combination, with the bag-turning mechanism, ofthe stripping-rollersH H,nieans for rotating the said rollers, and a bag-supporter, G, arranged substantially as shown and described, for the purposes set forth.

8. The combination of the laterallyexpansible and reciprocating arms C C, the separable fingers b b', the stripping-rollers II H, and the springs a a', means for expanding the 'said arms, for supporting and separating the said fingers, and for rotating the said rollers, all operating in connection with each other, and drivinggearing for reciprocating the said arms, for the purposes set forth.

SAMUEL T. LOCKWOOD.

v Vitnesses:

N. CowLns, HENRY FRANKFURTER.

ICO

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